Category-article-count
First of all, it looks like now you translated the correct string. It will be visible on category pages in the Punjabi within a couple of days.
By preferences I mean your user preferences, which you can change by clicking "My preferences" near your username at the top of the page. Go there and select "pa - ਪੰਜਾਬੀ" in the "Language" menu. It will help you to work here, because you will see how the interface gradually changes to English as you are translating.
Didn't get you much. Please use simple english and always try to answer clearly according to my questions, please. For example as I asked , "did you mean the language in......"
you should first response to the question mark with yes or no then the the further talk. (sorry, sometimes I confused). Tari Buttar (talk)